Hydrogen-induced cracking at grain and twin boundaries in an Fe-Mn-C austenitic steel

Motomichi Koyama; Eiji Akiyama; Takahiro Sawaguchi; Dierk Raabe; Kaneaki Tsuzaki

doi:10.1016/j.scriptamat.2011.12.015

Hydrogen-induced cracking at grain and twin boundaries in an Fe-Mn-C austenitic steel

Motomichi Koyama, Eiji Akiyama, Takahiro Sawaguchi, Dierk Raabe, Kaneaki Tsuzaki

IMR - Materials Design Division

Research output: Contribution to journal › Article › peer-review

173 Citations (Scopus)

Abstract

Hydrogen embrittlement was observed in an Fe-18Mn-1.2C (wt.%) steel. The tensile ductility was drastically reduced by hydrogen charging during tensile testing. The fracture mode was mainly intergranular fracture, though transgranular fracture was also partially observed. The transgranular fracture occurred parallel to the primary and secondary deformation twin boundaries, as confirmed by electron backscattering diffraction analysis and orientation-optimized electron channeling contrast imaging. The microstructural observations indicate that cracks are initiated at grain boundaries and twin boundaries.

Original language	English
Pages (from-to)	459-462
Number of pages	4
Journal	Scripta Materialia
Volume	66
Issue number	7
DOIs	https://doi.org/10.1016/j.scriptamat.2011.12.015
Publication status	Published - 2012 Apr

Keywords

Austenitic steel
Electron backscattering
Hydrogen embrittlement
Tension test
Twinning

Access to Document

10.1016/j.scriptamat.2011.12.015

Cite this

@article{ec470060bd85429d971086238319aa4c,

title = "Hydrogen-induced cracking at grain and twin boundaries in an Fe-Mn-C austenitic steel",

abstract = "Hydrogen embrittlement was observed in an Fe-18Mn-1.2C (wt.%) steel. The tensile ductility was drastically reduced by hydrogen charging during tensile testing. The fracture mode was mainly intergranular fracture, though transgranular fracture was also partially observed. The transgranular fracture occurred parallel to the primary and secondary deformation twin boundaries, as confirmed by electron backscattering diffraction analysis and orientation-optimized electron channeling contrast imaging. The microstructural observations indicate that cracks are initiated at grain boundaries and twin boundaries.",

keywords = "Austenitic steel, Electron backscattering, Hydrogen embrittlement, Tension test, Twinning",

author = "Motomichi Koyama and Eiji Akiyama and Takahiro Sawaguchi and Dierk Raabe and Kaneaki Tsuzaki",

note = "Funding Information: M.K. acknowledges the Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists. The Materials Manufacturing and Engineering Station and Materials Analysis Station at the National Institute for Materials Science supported this work through the production of the samples and carrying out the analysis of the chemical compositions. The microstructural observations were supported by Ms. N. Elhami and Mr. T. J{\"a}pel at Max-Planck-Institut f{\"u}r Eisenforschung. ",

year = "2012",

month = apr,

doi = "10.1016/j.scriptamat.2011.12.015",

language = "English",

volume = "66",

pages = "459--462",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Ltd.",

number = "7",

}

TY - JOUR

T1 - Hydrogen-induced cracking at grain and twin boundaries in an Fe-Mn-C austenitic steel

AU - Koyama, Motomichi

AU - Akiyama, Eiji

AU - Sawaguchi, Takahiro

AU - Raabe, Dierk

AU - Tsuzaki, Kaneaki

N1 - Funding Information: M.K. acknowledges the Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists. The Materials Manufacturing and Engineering Station and Materials Analysis Station at the National Institute for Materials Science supported this work through the production of the samples and carrying out the analysis of the chemical compositions. The microstructural observations were supported by Ms. N. Elhami and Mr. T. Jäpel at Max-Planck-Institut für Eisenforschung.

PY - 2012/4

Y1 - 2012/4

N2 - Hydrogen embrittlement was observed in an Fe-18Mn-1.2C (wt.%) steel. The tensile ductility was drastically reduced by hydrogen charging during tensile testing. The fracture mode was mainly intergranular fracture, though transgranular fracture was also partially observed. The transgranular fracture occurred parallel to the primary and secondary deformation twin boundaries, as confirmed by electron backscattering diffraction analysis and orientation-optimized electron channeling contrast imaging. The microstructural observations indicate that cracks are initiated at grain boundaries and twin boundaries.

AB - Hydrogen embrittlement was observed in an Fe-18Mn-1.2C (wt.%) steel. The tensile ductility was drastically reduced by hydrogen charging during tensile testing. The fracture mode was mainly intergranular fracture, though transgranular fracture was also partially observed. The transgranular fracture occurred parallel to the primary and secondary deformation twin boundaries, as confirmed by electron backscattering diffraction analysis and orientation-optimized electron channeling contrast imaging. The microstructural observations indicate that cracks are initiated at grain boundaries and twin boundaries.

KW - Austenitic steel

KW - Electron backscattering

KW - Hydrogen embrittlement

KW - Tension test

KW - Twinning

UR - http://www.scopus.com/inward/record.url?scp=84857118154&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84857118154&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2011.12.015

DO - 10.1016/j.scriptamat.2011.12.015

M3 - Article

AN - SCOPUS:84857118154

SN - 1359-6462

VL - 66

SP - 459

EP - 462

JO - Scripta Materialia

JF - Scripta Materialia

IS - 7

ER -

Hydrogen-induced cracking at grain and twin boundaries in an Fe-Mn-C austenitic steel

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this